高频地波雷达海上目标航迹校正方法  

A Maritime Target Track Correction Method for High Frequency Surface Wave Radar

作　　者：孙伟峰[1] 周德明 戴永寿[1] 周鹏[1] 李立刚[1] 万勇[1] 

机构地区：[1]中国石油大学(华东)信息与控制工程学院,山东青岛266580

出　　处：《中国海洋大学学报（自然科学版）》2017年第2期22-29,共8页Periodical of Ocean University of China

基　　金：国家自然科学基金项目(61501520);海洋公益性科研专项(201505002);中央高校基本科研业务费专项资金项目(14CX02083A);山东省自然科学基金项目(ZR2013FL035)资助~~

摘　　要：高频地波雷达对海上目标跟踪探测时,由于距离和方位角分辨率低且受到随机噪声的干扰,导致对目标位置探测不准确,形成的航迹会偏离目标的真实位置,影响跟踪的准确性。针对这个问题,结合海上特定目标跟踪的实际,本文从航迹的角度出发,基于对距离和方位角误差时间序列的统计建模,提出了一种基于同步船舶自动识别系统(Automatic Identification System,AIS)信息的高频地波雷达海上目标航迹校正方法。在高频地波雷达与AIS同步跟踪期间,采用统计回归的方法建立目标距离和方位角误差的校正模型;在高频地波雷达独立跟踪时,利用得到的模型分别对距离和方位角进行校正。利用实测高频地波雷达目标探测数据进行了航迹校正实验,校正后距离和方位角的均方根误差分别减少了约90%和75%,航迹跟踪效果得到了显著改善。Low-power high frequency surface wave radars （HFSWR） have attracted great interests for their over-the-horizon coverage capability and continuous-time mode of operation. They are acting as effec- tive long-range early warning tools in ocean remote sensing applications. When tracking maritime targets using HFSWR, low range and azimuth resolution and random noise interference will result in inaccuracy targeting. Thereafter the measured track will deviate from the target^s true trajectory with reduced track- ing accuracy. According to the practical situations of specific maritime target tracking, a track correction method exploiting Automatic Identification System （AIS）iinformationis proposed for HFSWR from the as- pect of track. The methodrelies on the statistical modeling of thetime seriesof range and azimuth errors with AIS data as groundtruth. Firstly, the outliers of the time series of range and azimuth errors are re- moved with a smoothing procedure followed. Thenrange and azimuth correction models are established by statistical regression methods during HFSWR and AIS synchronous tracking period. Finally,the measured range and azimuth are corrected via the established models to improve the tracking accuracy during inde- pendent tracking period of HFSWR. The results of track correction experiments using real HFSWR data- verify the effectiveness of the proposed method andthe range and azimuth errors can be reduced by about 90% and 75 % on average respectively after correction, which indicate that the tracking performance can be significantly improved by the proposed method.

关 键 词：高频地波雷达 目标跟踪 航迹校正 AIS 

分 类 号：TN958.93[电子电信—信号与信息处理]